OK so I was browsin' the Goodwill today and came across:

Tony Hawk's Pro Skater 2 (DC)
And Sonic Adventure Limited Edition.

SA:LE had it's original case but no manual and the case was cracked. The GD was is OK condition but only OK.

Bought it, on a whim for 2 dollars along with THPS2 for 2 dollars and brought it home, booted it up. It turns out I left my VMU with my Sonic Adventure International save. It saw my SA:I save and treated it as normal. Besides a god-awful camera, I couldn't find many differences... Any info on this subject?